No, the laser machines we provide are capable of both engraving and cutting. One machine alone can fulfill the two purposes.
Yes, either is ok. It supports Windows 10, Windows 2000, Windows XP, Win 7, and other operating systems
1. Laser tube length (relatively speaking, the longer, the bigger)
2. Laser tube diameter (relatively speaking, the thicker, the bigger)
3. The bigger a laser tube power is, the deeper the machine can cut, but its light spot is bigger. So, it is better to use a machine with a low-power laser tube to engrave, such as 40W, 50W or 60W.
For some thick materials, it works. But, when carving some other materials, you need to blow less.
If you are able to use some basic graphic design software, it will only take a few hours to master the operation. You just need to do some simple tests on different processing materials to know how to set the correct speed and laser power.